Rockwell Automation T3151 ICS Regent Real time Clock Communications Modules - Manual (Page 3)

Real-Time Clock Communications Modules (T3151)
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Figure 1. Block Diagram of Real-Time Clock
Communications Module.
When the processor modules read characters from the
communications module, the communications module sends
characters through triplicated bus drivers to the processor
Safetybus. The processor modules vote this triplicated data
and perform communications processing. When the processor
modules write data to the communications module, the
triplicated data is voted by the communications modules and
sent to the dual UART where it is then transmitted out the
associated port.
The communications modules’ two serial ports operate
independently and can both be configured differently to
support a wide variety of functions including Regent R2